Free calculators

Free Roofing Calculators

Five free, no-signup calculators covering the most common roofing measurement and pricing questions -- from shingle bundles to a full job selling price. Pick the one that matches what you already know.

Most popular

Roofing Shingle Calculator

Calculate how many shingle bundles to buy for a roof. Enter roof area, waste allowance, and shingle coverage per bundle to get bundles to purchase, rounded up to a whole bundle.

Calculate shingle bundles

All calculators

Every free roofing calculator

Roofing Shingle Calculator

Calculate how many shingle bundles to buy for a roof.

Needs
Roof area, waste allowance, and shingle coverage per bundle.
Gives you
Bundles to purchase, rounded up to a whole bundle.

Roofing Square Calculator

Convert measured roof area into roofing squares.

Needs
One or more section areas, in square feet.
Gives you
Base and waste-adjusted roofing squares.

Roof Replacement Cost Calculator

Get a broad planning-range cost estimate for a roof replacement.

Needs
Roof area and your own low/high cost-per-square figures.
Gives you
A low-to-high planning-range cost estimate.

Roofing Material Calculator

Calculate purchase units for underlayment, drip edge, and other accessories.

Needs
A measurement and the coverage one purchase unit provides.
Gives you
Whole purchase units to buy, rounded up.

Roof Estimate Calculator

Turn job costs into a required selling price.

Needs
Material, labor, and other direct costs, overhead %, and target margin %.
Gives you
The required selling price to hit your target margin.

Which calculator should I use?

Find the right calculator for what you know

Suggested workflow

A typical measurement-to-price workflow

Not every job needs every step -- use whichever calculators answer the question you actually have.

  1. Measure your roof area (with a tape measure, a supplier report, or an aerial measurement service).
  2. Convert that area into roofing squares with the Roofing Square Calculator.
  3. Calculate shingle bundles with the Roofing Shingle Calculator.
  4. Calculate underlayment, drip edge, and other accessory quantities with the Roofing Material Calculator.
  5. Review a broad planning-range cost with the Roof Replacement Cost Calculator.
  6. Price the job for overhead and target margin with the Roof Estimate Calculator.
  7. Build and save the full customer-ready estimate in Roofing Estimate Pro.

Free tools vs. Roofing Estimate Pro

What's free, and what Roofing Estimate Pro adds

These free calculators

  • Immediate results, no signup
  • No account, no saved calculator data
  • Based on the measurements and assumptions you enter
  • One calculation at a time

Roofing Estimate Pro

  • A reusable price book
  • Material and labor line-item costing
  • Business-level overhead and target margin
  • Saved, finalized estimates and customer proposals
  • Local browser backup and recovery

Next step

Already have your measurements? Turn them into a profitable estimate.

Roofing Estimate Pro helps contractors apply true material and labor costs, include overhead, price for a target margin, save estimates on this device, and produce a customer-ready proposal -- all from measurements you already have.

Build a profitable estimate

FAQ

Frequently asked questions

Which calculator should I use first?

If you already have a measured roof area, start with the Roofing Square Calculator to convert it into roofing squares, then the Roofing Shingle Calculator to find your bundle count. If you only need a rough budget number, the Roof Replacement Cost Calculator is a faster starting point.

Are these calculators free?

Yes. All five calculators are completely free, with no signup, no account, and no registration required.

Do these calculators save my numbers?

No. Every calculator runs entirely in your browser and nothing you enter is saved, sent to a server, or stored in any way -- reloading any calculator page clears its form.

What's the difference between the Roof Replacement Cost Calculator and the Roof Estimate Calculator?

The Roof Replacement Cost Calculator produces a broad, area-based planning range from your roof size and your own cost-per-square assumptions -- useful for early budgeting. The Roof Estimate Calculator is a contractor pricing tool: it starts from your own known material, labor, and other direct costs, applies overhead, and prices for a target gross margin to produce a required selling price.

What does Roofing Estimate Pro add beyond these free calculators?

Roofing Estimate Pro adds a reusable price book, material and labor line items, business-level overhead and margin defaults, saved estimates, estimate finalization, Good/Better/Best pricing options where supported, customer-ready proposals, and local browser backup and recovery -- everything these one-time, stateless calculators intentionally leave out.